Please help! I tried to get the matrices, but Matlab is saying something is incorrect. Please show all work.

A bank makes 4 types of loans to its customers with the following interest rates:

First mortgage, 12%

Second mortgage, 18%

Home improvement, 18%

Personal overdraft, 8%

The bank can loan out at most $210 million. In order to limit its exposure to risk, the bank has policies to spread its loans across different areas as follows:

Money loaned for first mortgages must be at least 70% of money loaned for all mortgages, and at least 25% of total money loaned

Money loaned for second mortgages must be at most 25% of total money loaned

The average interest rate on all loans must be at most 13%